HarborOne has teamed up with local police and the FBI to "contain" the situation, Tryder said.

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This week Raynham police have also been investigating multiple reports from the last couple of weeks of Raynham residents' bankcards being hacked and money stolen from their accounts. Whether these reports and the HarborOne reports are correlated is still unknown.

It was unclear as of Wednesday afternoon whether the event only affected customers at the Raynham branch, at 500 South Street West, or other branches as well and Tryder did not return a call for clarification.

Tryder said at this time he cannot release the nature of the fraudulent activity or how much money was withdrawn from accounts.

He did say that the bank was notified of the fraudulent activity earlier this week.

All customers impacted by the event should be notified by HarborOne by the end of the day Wednesday, Tryder said.

HarborOne Bank is the largest state-chartered cooperative bank in New England with $2.1 billion in assets, according the bank's website.

On Facebook, a handful of Raynham residents have warned people about the crime and a few have confirmed that their bank is HarborOne. Raynham Police Chief Jim Donovan confirmed Wednesday police have received a couple of reports from HarborOne customers.

Donovan said police had not yet found the source of these hacks.

People on Facebook say it may be linked to skimmers and micro cameras, which record card information including card numbers and pin numbers.

"Skimming technology has improved," Donovan said. "We used to tell people to look around a gas pump for a skimmer and now they can actually go inside the pump."

The amount of money being taken out of accounts range. People on Facebook have reported up to $1,500 withdrawn from their account.

Donovan said hackers might also take out multiple smaller amounts that may go unnoticed at first.

On Facebook people have reported seeing unknown withdrawals from their bankcards coming from New York City.

"It may not actually be a recent skimmer, it can be from a past data breach," Donovan said specifically using the Target data breach as an example.

"Skimmers can retain information from those breaches to attempt to use later."

While the situation is still under investigation Donovan suggests that people closely monitor their accounts.

"You can get alerts now when money is withdrawn," Donovan said. "Monitor your accounts and alert the bank immediately if something is wrong."